First, read this:
http://www.ansci.cornell.edu/4H/meat...atgoatfs14.htm
Next, if they were mine I would deworm them ASAP!! All new additions here are dewormed with moxidectin the moment they unload. You can buy a tube of Quest Horse Gel. Empty the tube, mix well to ensure the active ingredient is throughly distributed. Dose is 1cc per 100lbs. I wouldn't bother with Safeguard, it's usually ineffective in most areas.
How old are they?
If they are not in milk or pregnant, I would put out alfalfa pellets (I like Standlee Brand from TSC) & make sure they have some grass hay of some sort (I use coastal).....If they are in good body conditiom, they will be fine on just alfalfa, browse & grass hay...no need to worry about grain.
Get them a good loose mineral, not a mineral block. I use the cattle mineral Right Now Onyx made by Cargill.......Others can chime in with other mineral reccomendations. I mix baking soda in my mineral & leave it out free choice along with the alfalfa & hay.
Check their feet...how do they look? If you are not sure, post pictures of them for opinions. Odds are good they need a trim.
There's lots more, but this will get you started & folks will chime in with other info...
Do post pics if you can & congrats on your new goats.... I love my Alpines